/* HVAC Climate Engineering - Site styles */
:root {
  --color-primary: #0d5c63;
  --color-primary-dark: #08464b;
  --color-accent: #e07c3c;
  --color-bg: #f8f9fa;
  --color-text: #1a1a1a;
  --color-text-muted: #5a5a5a;
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --container: min(1140px, 100% - 2rem);
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --radius: 8px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

.container {
  width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: #1f2732;
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  min-height: 64px;
}

.logo img {
  display: block;
  height: 40px;
  width: auto;
  object-fit: contain;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.5rem;
}

.main-nav a {
  color: rgba(255,255,255,0.9);
  text-decoration: none;
  font-weight: 500;
  padding: 0.25rem 0;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
}

/* Hero */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 1rem 4rem;
  margin-top: 64px;
}

.hero-slider {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.hero-slide.active {
  opacity: 1;
  z-index: 0;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-dots {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  gap: 0.5rem;
}

.hero-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background 0.2s;
}

.hero-dot.active {
  background: #fff;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,92,99,0.7) 0%, rgba(8,70,75,0.6) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  max-width: 720px;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.hero-tagline {
  font-size: 1.15rem;
  opacity: 0.95;
  margin: 0 0 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background 0.2s, color 0.2s, transform 0.15s;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border: none;
}

.btn-primary:hover {
  background: #c9682e;
  color: #fff;
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: #fff;
  border: 2px solid #fff;
}

.btn-secondary:hover {
  background: #fff;
  color: var(--color-primary);
}

/* Sections */
.section {
  padding: 4rem 0;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600;
  text-align: center;
  margin: 0 0 2rem;
  color: var(--color-primary-dark);
}

/* About */
.about {
  background: #fff;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.about-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  object-fit: cover;
}

.about-text .btn {
  margin-top: 1rem;
}

.about-text p {
  margin: 0 0 1rem;
  color: var(--color-text-muted);
}

.about-features {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}

.about-features li {
  padding: 0.35rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.about-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 600;
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.service-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.service-icon {
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--color-bg);
}

.service-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.service-card h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 1rem 1.25rem 0.5rem;
  color: var(--color-primary-dark);
}

.service-card p {
  margin: 0 1.25rem 0.75rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.service-link {
  display: inline-block;
  margin: 0 1.25rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}

.service-link:hover {
  text-decoration: underline;
}

.section-cta {
  text-align: center;
  margin: 2rem 0 0;
}

/* Portfolio */
.portfolio {
  background: #fff;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.portfolio-item {
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.portfolio-item:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.portfolio-item-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow);
}

.portfolio-item-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Gallery */
.section-alt {
  background: var(--color-bg);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.gallery-grid img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* Brands */
.brands-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}

.brands-grid img {
  height: 48px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.7;
  transition: filter 0.2s, opacity 0.2s;
}

.brands-grid img:hover {
  filter: grayscale(0);
  opacity: 1;
}

/* Contact */
.contact {
  background: #fff;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
  max-width: 900px;
  margin: 0 auto;
}

.contact-info h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--color-primary-dark);
}

.contact-image {
  margin-top: 1.5rem;
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 280px;
}

.contact-image img {
  width: 100%;
  height: auto;
  display: block;
}

.contact-details {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.contact-details li {
  margin-bottom: 0.75rem;
}

.contact-details a {
  color: var(--color-primary);
  text-decoration: none;
}

.contact-details a:hover {
  text-decoration: underline;
}

.contact-form label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  margin-bottom: 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  border: 1px solid #ddd;
  border-radius: var(--radius);
}

.contact-form textarea {
  resize: vertical;
  min-height: 100px;
}

.contact-form button {
  cursor: pointer;
  border: none;
}

/* Footer */
.site-footer {
  background: #1f2732;
  color: rgba(255,255,255,0.9);
  padding: 3rem 0 0;
  font-size: 0.95rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1.2fr;
  gap: 2rem;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1rem 2rem;
}

.footer-col h3 {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #fff;
  margin: 0 0 1.25rem;
}

.footer-col p {
  margin: 0 0 1rem;
  line-height: 1.6;
  color: rgba(255,255,255,0.85);
}

.footer-contact {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
  color: rgba(255,255,255,0.85);
}

.footer-contact li a {
  color: rgba(255,255,255,0.9);
  text-decoration: none;
}

.footer-contact li a:hover {
  color: var(--color-accent);
}

.footer-contact .icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  opacity: 0.9;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-newsletter p {
  margin-bottom: 1rem;
}

.footer-newsletter-form {
  display: flex;
  gap: 0;
  margin-top: 0.5rem;
}

.footer-newsletter-form input {
  flex: 1;
  padding: 0.6rem 0.75rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border: none;
  border-radius: var(--radius) 0 0 var(--radius);
  min-width: 0;
}

.footer-newsletter-form button {
  padding: 0.6rem 1.25rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  background: #28a745;
  color: #fff;
  border: none;
  border-radius: 0 var(--radius) var(--radius) 0;
  cursor: pointer;
  white-space: nowrap;
}

.footer-newsletter-form button:hover {
  background: #218838;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 1rem 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  position: relative;
}

.footer-bottom .copyright {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.8);
}

.scroll-to-top {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius);
  background: transparent;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, border-color 0.2s;
}

.scroll-to-top:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
}

.scroll-to-top svg {
  width: 20px;
  height: 20px;
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .scroll-to-top {
    position: static;
    transform: none;
  }
}

/* Responsive */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: var(--shadow);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s;
  }

  .main-nav.open {
    max-height: 280px;
  }

  .main-nav ul {
    flex-direction: column;
    padding: 1rem;
    gap: 0;
  }

  .main-nav li {
    border-bottom: 1px solid #eee;
  }

  .main-nav a {
    display: block;
    padding: 0.75rem 0;
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .about-image {
    order: -1;
  }
}

/* Inner page hero */
.page-hero {
  margin-top: 64px;
  padding: 4rem 1rem 3rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  text-align: center;
}

.page-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin: 0 0 0.5rem;
}

.page-hero p {
  margin: 0;
  opacity: 0.95;
  font-size: 1.05rem;
}

.page-hero--small .breadcrumb {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  opacity: 0.9;
}

.page-hero--small .breadcrumb a {
  color: inherit;
  text-decoration: none;
}

.page-hero--small .breadcrumb a:hover {
  text-decoration: underline;
}

.page-hero--small .breadcrumb span:not([aria-hidden]) {
  margin-left: 0.25rem;
}

/* Blog */
.container--blog {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2.5rem;
  align-items: start;
}

.blog-search {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.blog-search input {
  flex: 1;
  padding: 0.6rem 0.75rem;
  font-family: var(--font-body);
  font-size: 1rem;
  border: 1px solid #ddd;
  border-radius: var(--radius);
}

.blog-search button {
  padding: 0.6rem 1rem;
  font-family: var(--font-body);
  font-weight: 600;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
}

.blog-search button:hover {
  background: var(--color-primary-dark);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

.blog-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.blog-card {
  background: #fff;
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.blog-card h2 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.blog-card h2 a {
  color: var(--color-primary-dark);
  text-decoration: none;
}

.blog-card h2 a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.blog-meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0 0 0.75rem;
}

.blog-card p:not(.blog-meta) {
  margin: 0 0 0.75rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.blog-sidebar {
  position: sticky;
  top: 5rem;
}

.sidebar-widget {
  background: #fff;
  padding: 1.25rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
}

.sidebar-widget h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 1rem;
  color: var(--color-primary-dark);
}

.sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-list li {
  margin-bottom: 0.5rem;
}

.sidebar-list a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.95rem;
}

.sidebar-list a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.sidebar-no-comments {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

@media (max-width: 900px) {
  .container--blog {
    grid-template-columns: 1fr;
  }

  .blog-sidebar {
    position: static;
  }
}

/* Fallback when images are missing */
.logo img[src*="logo.png"]:not([src]),
.hero-bg img {
  min-height: 200px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.service-icon img {
  background: var(--color-bg);
}